Hydration evolution of pre-cast concrete with steam and water curing
Hydration evolution of pre-cast concrete with steam and water curing
复制标题
蒸汽和水养护预制混凝土水化演化
DOI：
10.1007/s11771-013-1808-0
复制
发表时间：
2013-10
期刊：
影响因子：
--
通讯作者：
巴明芳
中科院分区：
文献类型：
--
作者：
巴明芳
采用XRD、TG、X-ray CT、SEM-BSE和MIP等测试技术，对考虑有效初始蒸养时间和水养时间影响的预制混凝土水化特性进行了测试分析。结果表明，在50 °C下，低水胶比预制混凝土的有效蒸养时间为10-14 h，水养时间为7-14 d。结合盐酸盐法和EDTA选择性溶解法，分别得到了水泥、粉煤灰和矿渣在预制混凝土中的水化演化规律，在此基础上计算了混凝土中水化物和无水物的含量，并测定了相应的动态毛细孔隙率。计算结果与试验结果的对比表明，所提出的胶凝材料水化动力学微观特征演化模型可用于预测一定养护条件下粉煤灰和矿渣预制混凝土的毛细孔隙率和水化产物含量的发展趋势。
The hydration characteristics of pre-cast concrete considering the effects of effective initial steam-curing and water-curing duration were measured and analyzed with XRD, TG, X-ray CT, SEM-BSE and MIP techniques. The results show that the effective initial steam-curing duration for pre-cast concrete with lower water-binder ratio was 10–14 h at 50 °C and the initial water-curing duration was 7–14 d. And the hydration evolution of cement, fly ash and slag in pre-cast concrete was obtained respectively by combining the hydrochlorides and EDTA selecting dissolution methods, based on which the contents of hydrated and anhydrate in concrete were calculated and the corresponding dynamic capillary porosity was also determined. Moreover, the comparison between calculated results and experimental ones indicates that the proposed evolution models of microscopic characteristics corresponding to hydration kinetics of cemented materials could be adopted to predict the developing trend of capillary porosity and hydration-products content in pre-cast concrete with fly ash and slag under certain curing conditions.
登录
查看更多内容
影响因子：
11.4
作者：
H. H. Patel-H.;C. Bland;A. Poole
通讯作者：
H. H. Patel-H.;C. Bland;A. Poole
影响因子：
11.4
作者：
Papadakis, VG
通讯作者：
Papadakis, VG
影响因子：
11.4
作者：
Kenneth A. Snyder;D. Bentz
通讯作者：
Kenneth A. Snyder;D. Bentz
影响因子：
3.9
作者：
D. Bentz
通讯作者：
D. Bentz
DOI：
--
发表时间：
2009
期刊：
Journal of the Chinese Ceramic Society
影响因子：
--
作者：
Y. Peiyu
通讯作者：
Y. Peiyu